: in addition to asean, the rmb can then be used as a trading currency with india, pakistan, russia, japan and korea. and the third step is to use the rmb globally. that's the general plan. >>reporter: actually, this is a huge plan - that's aimed at reducing the us dollar's dominance as an international currency. but first, beijing has got its work cut out. the country needs a social safety net to help through any financial shocks. and it should also liberalize its capital account and the convertibility of thecurrency. only then could the rmb hope to join the reserve currency club. >>song: and right now, we're not there yet. still we need a lot of time to build up china's capital market, banking system and also the social security and the insurance system. >>reporter: as for a time frame, the jury is divided - optimists cite 15 years, the pessimists 40 ! >>: for now, china will pay for brazilian sulphur in dollars. nonetheless, neighboring governments, eventhe us, welcome measures, albeit modest, that allow greater international use of the rmb. but some asean traders still need convincing.